发明名称 |
HIGH FIDELITY HORIZONTAL POSITION ERROR ESTIMATION FOR VEHICULAR GPS/DR NAVIGATION |
摘要 |
A method is provided for determining an Estimated Horizontal Position Error (EHPE) with respect to a navigation system onboard a telematics-equipped vehicle by utilizing a Global Navigation Satellite System (GNSS) navigation system in combination with a dead reckoning (DR) navigation system. The method includes: receiving GNSS positioning information from the GNSS navigation system; receiving DR positioning information from the DR navigation system; applying, by a telematics unit, a Kalman filter to the GNSS positioning information and the DR positioning information; calculating, by the telematics unit, the EHPE corresponding to the navigation system onboard the telematics-equipped vehicle based on the GNSS positioning information, the DR positioning information, and the Kalman filter. |
申请公布号 |
US2014195151(A1) |
申请公布日期 |
2014.07.10 |
申请号 |
US201313734523 |
申请日期 |
2013.01.04 |
申请人 |
GENERAL MOTORS LLC |
发明人 |
Sun Debo;Hay Curtis L. |
分类号 |
G01C21/00 |
主分类号 |
G01C21/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method for determining an Estimated Horizontal Position Error (EHPE) with respect to a navigation system onboard a telematics-equipped vehicle by utilizing a Global Navigation Satellite System (GNSS) navigation system in combination with a dead reckoning (DR) navigation system, the method comprising:
receiving GNSS positioning information from the GNSS navigation system; receiving DR positioning information from the DR navigation system; applying, by a telematics unit, a Kalman filter to the GNSS positioning information and the DR positioning information; calculating, by the telematics unit, the EHPE corresponding to the navigation system onboard the telematics-equipped vehicle based on the GNSS positioning information, the DR positioning information, and the Kalman filter, wherein calculating the EHPE comprises:
calculating a first root mean square (RMS) value associated with the GNSS positioning information in a first direction and a second RMS value associated with the GNSS positioning information in a second direction. |
地址 |
Detroit MI US |